package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.annotation.AutoFill;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.enumeration.OperationType;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;

import java.util.ArrayList;
import java.util.List;

@Service
@Slf4j
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    //新增菜品和对应的口味
    @Transactional//由于涉及多张表，要保证多张表的一致性，所以要加事务注解
    @Override
    public void saveWithFlavor(DishDTO dishDTO) {
        Dish dish=new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);//插入一条菜品数据，由于是新增的数据，且其id是自增的，参数dishDTO.getId()的值为null
        Long dishId = dish.getId();//获取insert语句生成的主键值，在DishMapper中有配置
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors!=null&&flavors.size()>0){
            flavors.forEach(dishFlavor ->{
                dishFlavor.setDishId(dishId);//设置口味表中的菜品id
            });
            //向口味表插入n条数据
            dishFlavorMapper.insertBatch(flavors);//将口味批量插入到口味表,根据dishId进行批量插入
        }
    }

    //菜品分页查询
    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(), dishPageQueryDTO.getPageSize());
        Page<DishVO> page=dishMapper.pageQuery(dishPageQueryDTO);
        PageResult pageResult = new PageResult(page.getTotal(),page.getResult());
        return pageResult;
    }

    //批量删除菜品
    @Transactional
    @Override
    public void deleteBatch(List<Long> ids) {
        //判断当前菜品是否能被删除---是否存在起售中的菜品
        ids.forEach(id->{
            Dish dish = dishMapper.getById(id);
            if (dish.getStatus()== StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        });
        //判断当前菜品是否能被删除---是否被套餐关联了
        List<Long> setmealIds =setmealDishMapper.getSetmealIdsByDishId(ids);
        if (setmealIds!=null&&setmealIds.size()>0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        //删除菜品表中的菜品数据
/*        for (Long id : ids) {
            dishMapper.deleteById(id);
            //删除菜品关联的口味数据
            dishFlavorMapper.deleteByDishId(id);
        }*/
        //根据菜品id集合批量删除菜品数据和口味数据
        dishMapper.deleteByIds(ids);
        dishFlavorMapper.deleteByDishIds(ids);
    }

    //根据id查询菜品和对应的口味数据
    @Override
    public DishVO getByIdWithFlavor(Long id) {
        Dish dish=dishMapper.getById(id);
        List<DishFlavor> dishFlavors=dishFlavorMapper.getByDishId(id);
        DishVO dishVO=new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavors);
        return dishVO;
    }

    //修改菜品和对应的口味数据
    @Override
    @Transactional
    public void updateWithFlavor(DishDTO dishDTO) {
        Dish dish=new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);//更新菜品表数据
        dishFlavorMapper.deleteByDishId(dishDTO.getId());//删除口味表中的原有数据
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors!=null&&flavors.size()>0){
            flavors.forEach(dishFlavor ->{
                dishFlavor.setDishId(dishDTO.getId());
            });
            //向口味表插入n条数据
            dishFlavorMapper.insertBatch(flavors);//将口味批量插入到口味表
        }
    }

    //根据分类id查询菜品
    @Override
    public List<Dish> list(Long categoryId) {
        Dish dish=Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.list(dish);
    }


    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }

    //菜品起售停售
    @Override
    public void startOrStop(Integer status, Long id) {
        Dish dish = Dish.builder()
                .id(id)
                .status(status)
                .build();

        dishMapper.update(dish);
    }

}
